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B
Oxy linkage
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C
Direct linkage between central atom
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D
Double bond between central atoms
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Solution
The correct option is B Oxy linkage Consider the oxidation state of P as 'x' in H4P2O7 ∴+4+2x+7×(−2)=0 ⇒x=+5 Thus calculated oxidation state of P = +5. Maximum oxidation of phosphorous = number of valence electron = +5 ∵ Calculated oxidation state of P = maximum oxidation of Phosphorous ∴ Oxy bond is present in H4P2O7